NTSB Identification: SEA99LA155.
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Accident occurred Friday, September 03, 1999 in INDEPENDENCE, OR
Probable Cause Approval Date: 01/18/2001
Aircraft: Schwarzler KOLB MARK 3, registration: N8979
Injuries: 1 Uninjured.
NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.
The pilot remained in the pattern during the aircraft's second test flight to check the flight characteristics and control responses. During a landing, the aircraft crossed the runway threshold at an altitude approximately 20 feet above the ground (agl), with an airspeed approximately 50 mph. According to the pilot, after crossing the threshold, the aircraft's left wing dropped suddenly, and the aircraft subsequently contacted the terrain. During a telephone interview, the pilot stated that he must have 'stalled' the aircraft.
The National Transportation Safety Board determines the probable cause(s) of this accident to be: The pilot's failure to maintain airspeed while on approach. Full narrative available
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